Patent GB-949340-A (GB)
Title: Improvements in or relating to hay or like balers
IPC: A01D87/12
Filed: 1961-11-17
Abstract: 949,340. Baling apparatus; roller conveyers; rollers. INTERNATIONAL HARVESTER CO. Nov. 17, 1961 [March 27, 1961], No. 41219/6]. Heading B5F. [Also in Divisions B8 and F2] Bale discharge means 21 such as described in Specification 917,538, comprises a structure pivotally mounted adjacent the exit end of a baler 20 so that it can swing about a vertical axis and carrying upper and lower series of power-driven rollers 65-70 arranged in parallel upwardly and rearwardly inclined planes spaced apart for frictional engagement of a bale 22 between the series of rollers for propelling said bale upwardly and rearwardly at suitable speed whereby it may be thrown into a trailed wagon 23 which is connected by a draw-bar 30 to the baler. Means 136 mounted on the structure engages the drawbar 30 so that the angular movements of the wagon are imparted to the bale-discharge means. The bale-discharge means is attached to the bale forming chamber 20 by means of removable pins 55 and 56 passing through aligned bushes 53 and 48, and 54 and 49, the bushes 48, and 49 being carried by the baler and 53 and 54 by the discharge means. The pins thus form a hinge about which the bale discharge means can swing. The mechanism for imparting the angular movements of the wagon to the bale discharge means comprises a channel-shaped housing 133 pivotally attached to an arm 134 which extends across and under the blade discharge means. A forwardly-extending arm 135 is attached to a transverse member 137 which has rod members 137a, 137b welded at each end for loosely engaging hook members 133a and 133b, forming hinges about which the mechanism can swing. A cross member 136 is fitted with pins 145- 148 which can drop over and flank the sides of the draw-bar 30 and a bar 136a having a plurality of holes is provided to removably engage the pin 146 in order to adjust the width apart of the arms 142, 143 for engaging draw-bars of different sizes. As the wagon 23 swings sideways the movement is transmitted through the draw-bar 30 to the arm 135 which causes the housing 133 to swing, carrying the bale-discharge means with it. If the angle of swing is too large the transverse member 137 comes out of the channel 133 as shown in broken lines in Fig. 3 and the bale-discharge means stops swinging. Driving mechanism.-A V-belt 130 engages pulleys 92-97 carried by rollers 65-70 and also an idler pulley 98. The rollers are driven by an engine 61 in directions shown in Fig. 7, thus causing the bale 22 to be moved in the direction of the arrow 45. The idler pulley can be adjusted in one position to loosen the belt, Fig. 11, and another to tighten the belt, Fig. 12. An arm 99 is pivotally attached at 100 to the upper frame 79 of the roller mechanism and to the centre of the idler pulley at 107. A metal strip 106 with a U-shaped bend is secured at 107 to the pulley and a rod 104 surrounded by a spring 111 passes through aligned apertures at either end of the U-bend of the strip 106 and is held in position at one end by a pin 109b. The other end is pivotally attached at 105 to the frame 79 and the rod can be pushed into position, as shown in Fig. 12, causing the spring to tighten up by swinging a crank 103 in the direction shown in Fig. 11. The arm 99 then rotates to the right to bring the pulley into the belt-tightening position shown in Fig. 12. Rollers.-Each roller comprises a sleeve member 116 mounted on a shaft 73 welded to end plates 118 and 120 and having pneumatic tyres 127 mounted on said sleeve member, each shaft being connected at one end to the pulley engaging the V-belt. In one embodiment, the roller has tyres arranged in spaced-apart groups with the spaces arranged to coincide with the twine tying up the bale so that said twine is not frictionally engaged by the tyres which would cause it to break and the bale to come apart. In another form the tyres are provided with interlocking means such as an annular groove on one tyre and a complementary annular rib on the adjacent tyre.